Keyword: paleoclimatology

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  • Discovery of 1,800-year-old ‘Rosetta Stone’ for tropical ice cores

    04/04/2013 5:54:26 PM PDT · by Ernest_at_the_Beach · 11 replies
    Watts Up With That? ^ | April 4, 2013 | by Anthony Watts
    > Will Lonnie Thompson archive THIS new ice core data? Posted on April 4, 2013 by Anthony Watts From the Ohio State University , taken with a grain of salt since Dr. Thompson and his wife Ellen are serial non archivers of ice core data (even when asked for it), which prevents other scientists from checking their work.Discovery of 1,800-year-old ‘Rosetta Stone’ for tropical ice coresFind offers the most complete picture of Earth’s low-latitude climate history to dateThis photo from a 1977 expedition to Quelccaya Ice Cap in Peru shows clearly defined annual layers of ice and dust visible in the...
  • Fall of Rome Recorded in Trees

    01/18/2011 10:49:18 PM PST · by neverdem · 38 replies
    ScienceNOW ^ | 13 January 2011 | Andrew Curry
    Enlarge Image Preserved. Climate changes recorded in tree rings correlate with important events in European history, such as the Black Death. Credit: Wikimedia When empires rise and fall and plagues sweep over the land, people have traditionally cursed the stars. But perhaps they should blame the weather. A new analysis of European tree-ring samples suggests that mild summers may have been the key to the rise of the Roman Empireā€”and that prolonged droughts, cold snaps, and other climate changes might have played a part in historical upheavals, from the barbarian invasions that brought about Rome's collapse to the Black...
  • Last Ice Age happened in less than year say scientists

    08/02/2008 2:28:28 PM PDT · by Renfield · 74 replies · 261+ views
    The Scotsman ^ | 8-02-08 | angus howarth
    THE last ice age 13,000 years ago took hold in just one year, more than ten times quicker than previously believed, scientists have warned. Rather than a gradual cooling over a decade, the ice age plunged Europe into the deep freeze, German Research Centre for Geosciences at Potsdam said. Cold, stormy conditions caused by an abrupt shift in atmospheric circulation froze the continent almost instantly during the Younger Dryas less than 13,000 years ago – a very recent period on a geological scale. The new findings will add to fears of a serious risk of this happening again in the...
  • Climate Cycles in China as Revealed by a Stalagmite from Buddha Cave(Journal Review)

    07/08/2003 3:48:19 PM PDT · by PeaceBeWithYou · 58 replies · 1,131+ views
    CO2 Science Magazine ^ | July 08, 2003 | Staff
    Reference Paulsen, D.E., Li, H.-C. and Ku, T.-L. 2003. Climate variability in central China over the last 1270 years revealed by high-resolution stalagmite records. Quaternary Science Reviews 22: 691-701. What was done In the words of the authors, "high-resolution records of š13C and š18O in stalagmite SF-1 from Buddha Cave [33°40'N, 109°05'E] are used to infer changes in climate in central China for the last 1270 years in terms of warmer, colder, wetter and drier conditions." What was learned Among the climatic episodes evident in the authors' data were "those corresponding to the Medieval Warm Period, Little Ice Age and...
  • Middle Ages were warmer than today, say scientists

    04/05/2003 7:38:26 PM PST · by Prince Charles · 75 replies · 2,747+ views
    London Daily Telegraph ^ | 4-6-03 | Robert Matthews
    Middle Ages were warmer than today, say scientists By Robert Matthews, Science Correspondent (Filed: 06/04/2003) Claims that man-made pollution is causing "unprecedented" global warming have been seriously undermined by new research which shows that the Earth was warmer during the Middle Ages. From the outset of the global warming debate in the late 1980s, environmentalists have said that temperatures are rising higher and faster than ever before, leading some scientists to conclude that greenhouse gases from cars and power stations are causing these "record-breaking" global temperatures. Last year, scientists working for the UK Climate Impacts Programme said that global temperatures...
  • Computer Models Forecast Sharp Increase In Temperature If Heat-trapping Emissions Continue To Rise

    02/17/2003 2:20:55 PM PST · by boris · 36 replies · 373+ views
    LINK Source: American Association For The Advancement Of Science Date: 2003-02-17 Computer Models Forecast Sharp Increase In Temperature If Heat-trapping Emissions Continue To Rise DENVER, CO –- Powerful computer models predict that winter temperatures in the polar regions of the world could rise as much as 10 degrees centigrade in the next hundred years, if no efforts are made to control production of carbon dioxide, methane and other gasses. “With projections to the year 2100, we can show what will happen if we continue with business as usual—if we don’t do anything to curb emissions of greenhouse gasses,” said Warren...
  • Methane And Mini-horses: Fossils Reveal Effects Of Global Warming

    03/04/2003 6:01:54 AM PST · by Junior · 31 replies · 1,470+ views
    Science Daily ^ | 2003-02-19
    DENVER, Colo. --- How will global warming affect life on Earth? Uncertainties about future climate change and the impact of human activity make it difficult to predict exactly what lies ahead. But the past offers clues, say scientists who are studying a period of warming that occurred about 55 million years ago.In a joint project of the University of Michigan, the University of New Hampshire and the Smithsonian Institution, researchers have been analyzing fossils from the badlands of Wyoming found in a distinctive layer of bright red sedimentary rock that was deposited at the boundary between the Paleocene and Eocene...